Originally Posted by
shoota
The drop distance from the saddle to the bars.
The top of the head tube vs. the top on the seat post are generally higher on any mountain bike than road bikes which use drop bars so there certainly will not be an issue of it being too low. A normal setup would be to have them on equal level. Some people with real long legs actually set their saddles up higher than the handlebars but you would have to bend your neck way up to ride that.